METHOD FOR DETECTING ANTIBODIES OR ANTIBODIES OR ANTIGENS AND FOR DETERMINING BLOOD GROUPS

摘要

The invention relates to a method for detecting antibodies or antigens in a test fluid as well as for determining blood groups by reaction with a defined specific binding partner. The antigen or antibody or specific binding partner are either present in free form in the test fluid or bonded to a support. In case of a positive antigen-antibody reaction an agglutinate of antigens or antibodies, the corresponding binding partners and the support materials is formed, which can be optically detected. A microreaction vessel having a cross-section which narrows from the top downwards contains a viscous substance, notably a gel. A test fluid is placed into the vessel. The specific binding partner is added to either the test fluid or the gel, or a liquid containing said binding partner is added to the vessel after the test fluid has been placed in it. The sedimentation image is then evaluated optically. A flat agglutinate of antigens or antibodies, binding partners and support materials indicates a positive antigen-antibody reaction, a deposit of antigens or antibodies and binding partners and/or support materials in the lower, narrow area of the vessel indicates a negative reaction. The above method can be carried out in a fully automated manner, for example by using a pipetting robot.